Many accurate 1921 census transcriptions have already been added to the pub history site, including London, and parts of Middlesex. If you can contribute to the site, send me some details to Kevan, along with some description of the specific property.
Cripplegate pub history index
Existed from at least 1821. At 12 Lower Whitecross Street before1891
Historical London public houses, Taverns, Inns, Beer Houses and Hotels.
Residents at this address.
1805/John Knowland, Queens Head, 12 Whitecross street/../../Holdens Directory
1821/Richard Kirkham / Victualler/../../Sun Fire Office records, held at
Guildhall Library **
1833-34/John Roberts, Queens Head, 12 Whitecross street/../../Pigot's
Directory
1839/John Smith/../../../Pigots Directory
1850/William Crouch/../../../P.O. Directory **
1851/William Crouch/Victualler/47/St Georges, Middlesex/Census
1851/Caroline Crouch/Wife/41/Luston, Suffolk/Census
1851/Sarah Hammond/Servant/50/Guildford, Surrey/Census
1851/Elizabeth Knight/Visitor/33/Ipswich, Suffolk/Census
1856/William Crouch/../../../Post Office Directory
1860/William Crouch/../../../P.O. Directory **
1869/William Crouch/../../../Post Office Directory
1872/William Crouch / Publican, Deceased / Died 24 November
1872/../../London Gazette, 20 February 1874 **
1881/William Ransley/Licensed Victuallers Manager/26/Alderton,
Suffolk/Census
1881/Britten/Domestic Servant, Widow/53/Cambridge/Census
1881/Richard Sawer/Potman/14/Woolwich Charlton/Census
1882/ Thomas Meekham/../../Post Office Directory
1884/Robert Stephens/../../../Post Office Directory
1891/Richard Allen Turner/../../../Post Office Directory
1895/Richard Allen Turner/../../../Post Office Directory
1899/Alex Mackenzie/../../../Post Office Directory
1910/Mrs Annie Tiller/../../../Post Office Directory
** Provided By Stephen Harris